Help how to make the tube with the reference with the video attached

SketchUp
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Hi with the help of the video attached.

s4u for components.skp (347.7 KB) I want to make the tube shape. with the help of s4u components.There are 2 parts for the video 1st is the components and the other is lines. I have completed the 1st part but the 2nd part im stuck to it. Model of sketchup file attached. Can u tell me how to make the 2nd part the tube shape made in the video

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964×624 177 KB

I have not really an idea what Your problem is, but when You want make more than a mesh:
Solutions are possible as You can see.